HI Marcus.
I think you are getting this confused with the Chemical detector which has a controlled source.
The VDR-2 is available in commercial form from the manufacturer (canberra) and is like any other of the many types of radiacs available surplus from various surplus dealers, in fact if you look at ebay you will see other types available. From what I remember the Geiger tube is just a commercial off the shelf item.
A yellow instead of green version was procured by FEMA then from my understanding, when they were no longer required they were all sold off as surplus in the late nineties and there are a number of groups who do nothing but collect these devices. They were fitted to the last of the 151's and the Hummer.
A non working demill would be fine anyway, all I want is a case to fill the mount.
Mark
